[R-SIG-Mac] Cairo png device not working in R 3.2.1 on OSX

Jeroen Ooms jeroen.ooms at stat.ucla.edu
Thu Aug 13 16:43:24 CEST 2015

The cairo png device on R 3.2.1 gives a warning "Application built with
libpng-1.5.18 but running with 1.6.17" and then produces a completely blank
png image.

  options(bitmapType = "cairo");

png(tmp <- tempfile())
system2("open", tmp)

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